Irritating...
I do understand, and even sympathize a little, with the authorities.
A little. They REALLY don't want to be the next school to hit the news. Bad for the heart, you know.
But look... if they found five swords, he's a fairly standard 'armory geek'. That means he either has no interest in learning to use them (and thus, they're about as dangerous as a cooking knife... less, since they're probably showy and fairly blunt) or he's an aspiring fencer or SCA person... in which case he's probably not going to go on a school shooting spree.
Counterstrike maps of the school? Geez... that's hardly the same level as calling in a friggin' BOMB THREAT. And he posted the maps online, so it would appear to be done more for the challenge than for his own private satisfaction.
Even WITH all those factors, let's say he modded in faces of people he disliked at school and shot them over and over. So? It harms nobody and, if he's got a lot of built-up pressure, it gets released without said news story about some kid who cracked and went after his teachers and fellow students. It's called C-A-T-H-A-R-S-I-S.
And the boycotting of the meeting? Childish, simply childish.